Gas igniting and extinguishing device.



PATENTED SEPT. 18. 1906.* P. S. GRiTNPELD.

GAS IGNITING AND EXTINGUISHING DEVICE.

APPLICATION FILED APR. 22, 1905" FRITZ SIEGFRIED GRIINFELD, OF BERLIN,GERMANY.

GAS IGNITING AND EXTINGUISHING DEVICE.

Specification of Letters Patent.

Patented Sept. 18,1906.

Application filed April 22. 1905. Serial No. 256.971.

T0 (ti/Z whom it may concern."

Be it known that I, FRITZ SIEGFRIED GRIIN- FELD, a subject of the Kingof Prussia, German Emperor, residing at the city of Berlin, in theKingdom of Prussia, German Empire, have invented certain new and usefulImprovements in Gas Igniting and Extinguishing Devices and I do herebydeclare the fol lowing to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

My invention relates to cocks for gas igniting and extinguishing devicesin which cooks the plug should, on the one hand, have the leastpracticable frictional resistance, as the operative power must be small,and, on the other hand, be readily withdrawable without having todismount the whole of the device.

My invention consists in mounting the plug of the cock so that at oneend it is engaged by an ad 'ustable screw or other equivalent means.

My invention consists in a construction in which the plug of the cock iscarried at one end in an adjusting-screw or other equivalent means andat the other end in a spring seating.

In the accompanying drawings, Figures 1 and 2 are respectively a sideview and an end view of the cock of the invention. Fig. 3 is a sideview, and Fig. 4 is a vertical section, of a modification.

a is the gas-pipe, b the cock-barrel, and 0 its plug,having a spindle d,the end of which is engaged by the end of an adjusting-screw e.

40 f is a flat or plate spring in which the opposite end of the plug iscarried and which acts against any outward spring of the same. Thisspring is screwed to the frame g. In this way the plug 0 is freely heldbetween the adjusting-screw c and the flat spring f with the tapersurfaces of the plug and barrel in contact-and making a tight closure.

To withdraw the plug, the spring f is drawn back, so that the path ofthe plug is left free.

In the construction shown in Figs. 3 and 4 the plug 0 is not providedwith a special spindle, but is so formed that it is engaged by its endon the adj Listing-screw. The spring f is replaced by a flat seating,which is acted on by a spring.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In gas igniting and extinguishing de- Vices thecombination of the cock-plug with an adjusting-screw which engages theend of the plug, and spring means acting against the pithler end of theplug, for the purpose speci- 2. In gas igniting and extinguishingdevices the combination of the cock-plug with an adjusting-screw whichengages the end of the plug and a spring-controlled flap acting againstthe other end of the plug for the purpose specified.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

FRITZ SIEGFRIED GRUNFELD.

Witnesses VVOLDEMAR I-IAUPT, IIENRY IIASPER.

